25-channel Nematic Liquid-Crystal Optical Time-Delay Unit Characterization

Nabeel A. Riza

doi:10.1109/68.473473

25-channel Nematic Liquid-Crystal Optical Time-Delay Unit Characterization

Nabeel A. Riza

University of Central Florida

Research output: Contribution to journal › Article › peer-review

Abstract

A 25-channel, 1-bit, free-space, nematic liquid crystal (NLC) spatial light modulator (SLM)-based optical time delay unit (OTDU) is demonstrated with worst case electrical signal-to-noise ratios (SNR‘s) ranging from 50–60 dB for various delay/no-delay modes of operation and with a worst case -42.3-dB electrical channel isolation/crosstalk level. For comparison, single channel performance neglecting crosstalk noise but including within-channel leakage noise gives electrical SNR's from 74–85 dB, indicating that the leakage signal in this OTDU is minimal compared to crosstalk. To lower crosstalk, path-difference compensated imaging optics must be used by the OTDU.

Original language	English
Pages (from-to)	1285-1287
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	7
Issue number	11
DOIs	https://doi.org/10.1109/68.473473
Publication status	Published - Nov 1995
Externally published	Yes

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title = "25-channel Nematic Liquid-Crystal Optical Time-Delay Unit Characterization",

abstract = "A 25-channel, 1-bit, free-space, nematic liquid crystal (NLC) spatial light modulator (SLM)-based optical time delay unit (OTDU) is demonstrated with worst case electrical signal-to-noise ratios (SNR{\textquoteleft}s) ranging from 50–60 dB for various delay/no-delay modes of operation and with a worst case -42.3-dB electrical channel isolation/crosstalk level. For comparison, single channel performance neglecting crosstalk noise but including within-channel leakage noise gives electrical SNR's from 74–85 dB, indicating that the leakage signal in this OTDU is minimal compared to crosstalk. To lower crosstalk, path-difference compensated imaging optics must be used by the OTDU.",

author = "Riza, \{Nabeel A.\}",

year = "1995",

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doi = "10.1109/68.473473",

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AU - Riza, Nabeel A.

PY - 1995/11

Y1 - 1995/11

N2 - A 25-channel, 1-bit, free-space, nematic liquid crystal (NLC) spatial light modulator (SLM)-based optical time delay unit (OTDU) is demonstrated with worst case electrical signal-to-noise ratios (SNR‘s) ranging from 50–60 dB for various delay/no-delay modes of operation and with a worst case -42.3-dB electrical channel isolation/crosstalk level. For comparison, single channel performance neglecting crosstalk noise but including within-channel leakage noise gives electrical SNR's from 74–85 dB, indicating that the leakage signal in this OTDU is minimal compared to crosstalk. To lower crosstalk, path-difference compensated imaging optics must be used by the OTDU.

AB - A 25-channel, 1-bit, free-space, nematic liquid crystal (NLC) spatial light modulator (SLM)-based optical time delay unit (OTDU) is demonstrated with worst case electrical signal-to-noise ratios (SNR‘s) ranging from 50–60 dB for various delay/no-delay modes of operation and with a worst case -42.3-dB electrical channel isolation/crosstalk level. For comparison, single channel performance neglecting crosstalk noise but including within-channel leakage noise gives electrical SNR's from 74–85 dB, indicating that the leakage signal in this OTDU is minimal compared to crosstalk. To lower crosstalk, path-difference compensated imaging optics must be used by the OTDU.

UR - https://www.scopus.com/pages/publications/0029408738

U2 - 10.1109/68.473473

DO - 10.1109/68.473473

M3 - Article

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SP - 1285

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JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 11

ER -

25-channel Nematic Liquid-Crystal Optical Time-Delay Unit Characterization

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